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Round|Lab Grown|IGI

28.34ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG729533441

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729533441

Diamond specifications and retailer prices

From £14,407 GBP
$19,304 USD
As of October 28, 2026
Save £28,619 GBP (67%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £43,026 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 28.34ct lab-grown round diamond

This 28.34ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG729533441 or 729533441. Listed at 13 retailers as of October 28, 2026, with prices from £14,407 to £43,026, a £28,619 spread on the same certified stone. Brilliant Earth lists it at £43,026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

28.34
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729533441
Dimensions19.45 × 19.40 × 12.07 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
19.45 mm19.40 mm28.34 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729533441
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £43,026 GBP|Low: £14,407 GBP|High: £59,211 GBP|Avg: £28,243 GBP|-10.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 13£14,407 GBP
Retailer 9£15,903 GBP
Retailer 3£15,981 GBP
Retailer 8£18,174 GBP
Retailer 11£18,230 GBP
Retailer 12£18,447 GBP
Retailer 6£19,000 GBP
Retailer 5£24,118 GBP
Retailer 4£26,462 GBP
Retailer 2£31,253 GBP
Retailer 7£34,572 GBP
Retailer 10£39,771 GBP
Brilliant Earth£43,026 GBP

24 data points across 13 retailers

13 retailers£14,407 GBP to £43,026 GBP

B+
Cheapest Retailer
-
£14,407 GBP
$19,304 USD
B+
Retailer 2
-
£15,903 GBP
$21,308 USD
View
B+
Retailer 3
-
£15,981 GBP
$21,413 USD
View
B
Retailer 4
-
£18,174 GBP
$24,351 USD
View
B
Retailer 5
-
£18,230 GBP
$24,426 USD
View
Retailer 6
-
£18,447 GBP
$24,717 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£18,447 GBP
$24,717 USD
View
B+
Retailer 8
-
£19,000 GBP
View
Retailer 9
-
£26,462 GBP
$35,457 USD
View
Price last confirmed 72 days ago
B
Retailer 10
-
£31,253 GBP
€39,882 EUR
View
Retailer 11
-
£34,572 GBP
A$71,266 AUD
View
Price last confirmed 8 days ago
B
Retailer 12
-
£39,771 GBP
$53,289 USD
View
Most Expensive
B
Brilliant Earth
15635036A · Oct 29
£43,026 GBP
$57,650 USD
View
12 more retailers have this diamond
Prices start from £14,407 GBPSave up to £28,619 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
28.34ct Round
£14,407 GBP